JOURNAL OF RARE EARTHS
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2026
·
IF 9.6
Hebi Zhang,Wei Jia,Jianxun Bao,Min Wu,Yannan Zhang,Ziyi Zhu,Jianbei Qiu,Hao Wu,Yingjie Zhang
Spinel lithium manganate (LiMn 2 O 4 ) is a promising cathode material for lithium-ion batteries (LIBs) due to its non-toxicity, cost-effectiveness, and recyclability. However, its development is hindered by rapid capacity degradation and structural collapse caused by Jahn-Teller distortion and Mn-ions dissolution. In this work, a dual-functional LaNiO 3 coating on LiMn 2 O 4 particles was introduced to prevent direct contact with the F-containing electrolyte, meanwhile, apply compressive stress on the surface of LiMn 2 O 4 , suppressing surface MnO 6 octahedra distortion and preserving cubic symmetry during deep charge-discharge cycles. The strong La–O bonds can strengthen interface Mn–O bonds and increase the activation energy for Mn-ions disproportionation and acid erosion, thus reducing Mn-ions dissolution. Additionally, LaNiO 3 can serve as a conductive synapse to improve conductivity of LiMn 2 O 4 and optimize the Li + migration pathway at the electrode-electrolyte interface, reducing the migration potential barrier of Li + . Electrochemical tests show that the 1 wt% LaNiO 3 -coated LiMn 2 O 4 cathode achieves an initial discharge capacity of 130.37 mAh/g with a capacity retention of 92.27% after 600 cycles. This performance is significantly superior to that of the unmodified LiMn 2 O 4 , which only exhibits an initial capacity of 115.63 mAh/g and a retention of 79.55%. This work offers an effective strategy to enhance LiMn 2 O 4 stability and capacity and provides a theoretical basis for using perovskite materials in surface modification.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Shiwen Chu,Han Gao,Shiyu Zhu,Changle Luo,Zhuangzhuang Ma,Mochen Jia,Xu Chen,Jibin Zhang,Linyuan Lian,Ying Liu,Dongwen Yang,Yanbing Han,Zhifeng Shi
Multimodal optical anti-counterfeiting plays a vital role in modern commodity circulation. However, most current multimodal anti-counterfeiting materials rely on complex multi-component compounds and costly rare-earth ion doping, which limits their commercial applications. Therefore, achieving multimodal anti-counterfeiting within simple and low-cost compound systems holds promising practical prospects. This work developed luminescent materials with multimodal emission and optical storage capabilities via Mn 2+ single doping and Li-flux modification of an inexpensive and readily available CaO host. Calcium oxide is a common industrial product that can be obtained through simple calcination, laying the foundation for practical commercial applications. The Mn 2+ singly-doped sample enables information writing via ultraviolet light and dual-mode (thermal/optical) readout, a property not shared by the Li-flux modified counterpart. Furthermore, based on the flux effect, Li-flux treatment not only enhances the green emission of Mn 2+ but also introduces deeper traps, extending storage duration and enabling high-temperature readout. Leveraging the differences in optical response and trap distribution between the two materials, a multi-level optical anti-counterfeiting demonstration with dynamic color and temperature-dependent characteristics was constructed. This work provides a new material strategy for developing low-cost, high-security optical anti-counterfeiting and information encryption technologies.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Wenlu Zhang,Yaning Fu,Zhen Feng,Mengyao Huang,Youcai Lu,Qingchao Liu
Mn doping creates symmetry-broken Co δ+ -O-Ru δ− heterointerfaces. • Polarized Ru and Co sites enable catalytic shunting of ORR and OER. • Reversible metal-oxygen bond adaptation accelerates Li 2 O 2 conversion. • The catalyst delivers an ultralow discharge-charge overpotential of 0.37 V. • Li-O 2 cells reach 34,738 mAh g −1 and cycle stably for 208 cycles. Aprotic Li-O 2 batteries require efficient bifunctional oxygen electrocatalysis, yet ORR and OER impose conflicting demands on oxygen-intermediate adsorption and product desorption. Herein, we construct a symmetry-broken Mn-doped Co 3 O 4 /RuO 2 heterointerface on carbon cloth to couple catalytic shunting with self-adaptive interfacial bonding. Mn incorporation reinforces Co-O-Ru coupling and generates asymmetric Co δ⁺ -O-Ru δ⁻ units, as verified by XPS, XAS, and theoretical calculations. The resulting interfacial polarization spatially divides the oxygen-redox pathway: electron-enriched Ru sites preferentially promote O₂ adsorption/activation for ORR, whereas electron-deficient Co sites facilitate Li₂O₂ decomposition/desorption for OER. Meanwhile, in situ Raman spectroscopy and theoretical bond-length analysis reveal reversible metal-oxygen bond elongation/contraction during discharge/charge, enabling temporal adaptation of interfacial bonding to evolving intermediates. This spatial shunting and temporal self-adaptation synergistically mitigate the adsorption-desorption conflict, improve Li 2 O 2 reversibility, and maintain efficient charge-transfer pathways. Consequently, the Mn-Co 3 O 4 /RuO 2 cathode achieves a low overpotential of 0.37 V, a high discharge capacity of 34,781 mAh g −1 , and stable cycling for 208 cycles. This study provides a shunt-adaptive heterointerface strategy for multistep oxygen electrocatalysis. Download: Download high-res image (275KB) Download: Download full-size image
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高影响因子
ChemSusChem
·
2026
·Vol. 19
·期 17
·e70999
·
IF 5.9
Huaisheng Qin,Jiawei Chen,Xin Song,Jian Wang,Zongmin Zheng,Yang Feng,Jianmin Zhang
To address the safety issues associated with traditional liquid lithium-ion batteries and the performance deficiencies of single-component solid-state electrolytes, this work proposes a bioinspired strategy of designing composite solid-state electrolytes (CSE). A tree-root-like 3D skeleton containing dendritic micro- and nanopoly(vinylidene fluoride) (PVDF) fibers and uniformly distributed Li–Al layered double hydroxide or oxide (Li–Al-LDH or Li–Al-LDO) nanosheets was constructed and combined with poly(ethylene oxide) (PEO) electrolyte; hence, LDH@PVDF/PEO or LDO@PVDF/PEO CSE films were successfully prepared. LDO@PVDF/PEO electrolyte film exhibits high tensile strength (26.4 MPa) and Young’s modulus (625.3 MPa) and is able to maintain structural integrity at 100 °C. LDO@PVDF/PEO exhibits ionic conductivity of 1.21 × 10 −4 S cm and lithium ion transference number of 0.41 at 50 °C, both higher than those of PEO, LDO/PEO, and LDH@PVDF/PEO. In addition, its electrochemical stability window extends to 4.9 V, demonstrating its potential for use with high-voltage cathodes. Li/(LDO@PVDF/PEO)/LiFePO 4 cells were assembled and tested, showing excellent rate capability and capacity retention. In addition, Li/(LDO@PVDF/PEO)/Li symmetric cells demonstrated excellent cycling stability for over 1500 h at a current density of 0.1 mA cm −2 . This work provides an innovative biomimetic strategy for constructing high-performance CSE applicable to next-generation solid-state lithium metal batteries. Graphical A bioinspired strategy is proposed to construct a tree-root-like 3D skeleton of PVDF dendricolloids as hosts to achieve uniform dispersion of high-content (50 wt%) Li–Al-LDH/LDO nanosheets, breaking the filler agglomeration bottleneck in traditional composite solid-state electrolytes (CSE). This composite electrolyte design simultaneously realizes high filler content, uniform dispersion, continuous/fast Li + transport channels, and enhanced mechanical properties.
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高影响因子
Small
·
2026
·
IF 11.8
Quanzhen Sun,Zhipan Zhong,Yifan Li,Xiaowen Zhang,Weihuang Wang,Caixia Zhang,Hui Deng,Shuying Cheng
Performance of flexible kesterite Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cell is mainly limited by large open-circuit voltage deficit ( V oc, def ) due to severe carrier recombination primarily caused by numerous defects at CZTSSe/CdS interface. Here, a modification strategy by doping Li ions at front interface is proposed to reducing carrier recombination, where the sample uniformly doped Li ions into CZTSSe absorber is the reference group. In this process, the secondary phases and defects in the CZTSSe absorber are effectively inhibited. Furthermore, the highly dense absorber enables a high-quality CZTSSe/CdS heterojunction, resulting in the decreased interface defect states from 2.90 × 10 15 to 9.00 × 10 14 cm −3 . These effects result in a reduced carrier recombination and decreased V oc, def . The flexible CZTSSe solar cell has achieved a power conversion efficiency of 12.31% with a V oc of 0.555 V. Additionally, the flexible devices with 1.22 cm 2 area (champion efficiency of 9.61%) are assembled into the flexible solar module (4.56 cm 2 area) with 7.85% efficiency and V oc of over 2 V by the shingled technology. The work provides insights for promoting the efficiency of flexible kesterite solar cells and demonstrates the viability of shingled technology for flexible solar modules.
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PubMed
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 12
·893
·
IF 4.3
Danyang Li,Can Liu,Shu Zhao,Fujie Li,Hao Li,Chao Wang,Xiu Song Zhao
Na-layered Li-containing Mn-based cathodes (NaxLiyMn1-yO2, NLMOs) with additional Na+storage ability resulting from the anionic redox reaction (ARR) hold great promise for sodium-ion batteries (NIBs). However, practical applications of NLMOs encounter challenges, such as migration of transition metal Mn, loss of lattice oxygen, and voltage decay during cycling. Here, we show that Cu plays an important role in enhancing the ARR via the reductive coupling mechanism (RCM). Results shows that a Cu2+/Fe3+modified NLMO sample delivers a Na+storage capacity as high as 174 mA h g−1at 0.2C, higher than that of a Zn2+/Fe3+modified NLMO sample (130 mA h g−1) and NLMO (154 mA h g−1). Both in situ and ex situ characterization results indicate that the obvious improvement in the electrochemical performance of the Cu2+/Fe3+modified NLMO is due to the additional overlaps between the Cu 3d and O 2p orbitals, which is beneficial for the RCM. As a result, the ARR is enhanced so as to increase the Na+storage capacity.
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PubMed
高影响因子
Small
·
2025
·
IF 12.1
Zhiheng Zou,Guang Yang,Haolan Li,Zhengsheng Yang,Bin Yao,Huanyong Liu
The application of polymer electrolytes in high-performance lithium metal batteries (LMBs) is usually restricted by their sluggish ion conduction, and inferior electrochemical stability compatibility with electrodes. Here, a cationic copolymer-based electrolyte PMC is developed. The copolymer of acryloyloxyethyl trimethylammonium bis(trifluoromethanesulfonyl)imide (AET⁺TFSI⁻), hexafluorobutyl acrylate (HFBA), and N, N′-methylenebisacrylamide (MBA) is synthesized by photopolymerization with carbonate electrolytes. The copolymer facilitates the lithium salt dissociation, adjusts Li + interaction with the polymer chain, regulates Li + solvation environment, and thus promotes fast ion transport (ionic conductivity of 7.19 × 10 −4 S cm −1 , Li + transference number of 0.84) and uniform Li deposition. PMC is electrochemically stable up 4.43 V versus Li + /Li and forms stable solid electrolyte interphase (SEI) with the anode, supporting long-term stability (1500 h) of lithium plating/stripping test at 0.2 mA cm −2 , 0.2 mAh cm −2 . The Li/PMC/LiFePO 4 cell shows excellent stability at 1C and a high specific capacity of 134.2 mAh g −1 even at 5C. PMC forms voltage-resisting, LiF-rich cathode electrolyte interface (CEI) with LiCoO 2 . The Li/PMC/LiCoO 2 cell shows excellent stability over 100 cycles with a capacity retention of 96%. Nonflammability of PMC and high safety of PMC-based pouch type cells are confirmed. This work provides a facile method toward high-performance and safe LMBs.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xian Zhang,Yuhang Yang,Jiage Yu,Ziming Li,Youyong Zhang,Xiangsheng Xie,Zhongping Zhang,Yunfeng Guan,Yuqiang Pi,Feng Wang,Yu Ding
Various strategies have shown promise for addressing the volume expansion issue of silicon (Si)-based anode materials and enhancing their electrochemical performance, such as nanocrystallization and the use of carbon-encapsulated nano-Si particles. However, the agglomeration of nano-Si particles remains a challenge, limiting their full potential. In this study, Zn-MOF-74 was employed to improve the dispersion of nano-Si powder in a carbon source. Subsequently, polyacrylonitrile was used in an electrospinning process to prepare an effective coating, followed by heat treatment to prepare nitrogen-doped Si/C flexible anode composites. The influence of the coating degree on electrochemical performance was investigated, and the Si/C-MOF-74/CNFs-2 composite prepared with 30.3 wt% nano-Si particles exhibited specific discharge capacities of 1030.1 mAh·g −1 after 150 cycles at 0.1 A·g −1 , 610.8 mAh·g −1 after 300 cycles at 1.0 A·g −1 , and 409.1 mAh·g −1 after 300 cycles at 2.0 A·g −1 .
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Lu Zhou,Xinming Fan,Haojie Du,Gaoqiang Mao,Qian Wang,Yufang Chen,Xueyi Guo,Dawei Yu
This paper introduces a novel electrolyte additive, 3,5-bis(trifluoromethyl)phenyl isocyanate (3,5-Bis(CF 3 )PhNCO), designed to mitigate interfacial instability and structural degradation of single-crystal LiNi 0.92 Co 0.06 Mn 0.02 O 2 cathodes under 4.6 V high-voltage cycling. Distinct from conventional monofunctional additives, 3,5-Bis(CF 3 )PhNCO integrates strongly reactive -NCO groups and electronegative -CF 3 groups, enabling a unique synergistic working mechanism. The -NCO moiety scavenges moisture and neutralizes acidic species (e.g., HF) to suppress electrolyte hydrolysis, while the -CF 3 groups enhance hydrophobicity and induce preferential oxidative decomposition for the formation of a robust cathode-electrolyte interphase (CEI). Driven by this synergistic effect, the additive constructs a ∼20 nm nitrogen-rich CEI layer, which effectively alleviates uneven Li + deposition, stabilizes the valence states of transition metals, and inhibits microcracking of the NCM92 cathode-effects validated by focused ion beam (FIB) 3D reconstruction, X-ray absorption fine structure spectroscopy (XAFS), and COMSOL Multiphysics simulations. Electrochemically, with 2 wt.% additive incorporation, the cells achieved an excellent capacity retention of 87.08% after 150 cycles at a 0.5 C rate, while full cells maintained 86.67% of their capacity after 1400 cycles at 1 C. This work establishes theoretical and experimental frameworks for multifunctional additive design, offering critical guidance for developing high-energy-density, long-life lithium-ion battery cathodes.
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Green Energy & Environment
·
2020
·Vol. 7
·期 4
·734-741
·
IF 6.395
Huiqin Wang,Fengchu Zhang,Jing Xia,Fei Lu,Bo Zhou,Ding Yi,Xi Wang
Up to now, three kinds of ion-storage mechanisms are summarized towards anode materials in lithium/sodium-ion batteries, but they have low capacity and poor cyclic performance. Therefore, it is necessary to develop a new approach to optimize ion storage. Herein, we report an adsorption/desorption storage route through engineering electronic structure of cation-deficient Ti 1-x O 2 nanosheets. Ti 1-x O 2 nanosheets indeed exhibit higher capacity (332.1 mA h g −1 vs. 137.7 mA h g −1 for LIBs, 195.7 mA h g −1 vs. 111 mA h g −1 for SIBs), and more stable cyclic performance (296 mA h g −1 vs. 99 mA h g −1 for LIBs, 178.1 mA h g −1 vs. 80.2 mA h g −1 for SIBs after 100 cycles) at 0.1 A g −1 than TiO 2 nanosheets. Kinetics analysis and density functional theory (DFT) calculations reveal that electronic structures of vacancy within Ti 1-x O 2 nanosheets encourage a novel adsorption–desorption storage route. These results highlight the benefits of the engineered electronic structures within electrode material and implement novel ion-storage mechanism towards broad energy storage applications.
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高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Shu Yang,Guanjie Li,Xiaoyan Lin,Changyong Mo,Xianggui Zhou,Lijiao Quan,Kuan Zhou,Suli Li,Hai Wang,Weishan Li
Lithium-metal battery based on Ni-rich cathode provides high energy density but presents poor cyclic stability due to the unstable electrode/electrolyte interfaces on both cathode and anode. In this work, we report a new strategy to address this issue. It is found that the cyclic stability of Ni-rich/Li battery can be significantly improved by using succinic anhydride (SA) as an electrolyte additive . Specifically, the capacity retention of LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811)/Li cell is improved from 14% to 83% after 200 cycles at 1 C between 3.0 and 4.35 V by applying 5% SA. The underlying mechanism of SA contribution is understood by comparing the effects of malic anhydride (MA) and citraconic anhydride (CA), both of which share a similar molecular structure to SA but show different effects. On anode side, SA can but MA and CA cannot form a protective solid electrolyte interphase (SEI) on Li anode. On cathode side, three anhydrides can suppress the formation of hydrogen fluoride from electrolyte oxidation decomposition, but SA behaves best. Typically, MA shows adverse effects on the interface stability of Li anode and NCM811cathode, which originates from its high acidity. Though the acidity of MA can be mitigated by substituting a methyl for one H atom at its C C bond, the substituent CA cannot compete with SA in cyclic stability improvement of the cell, because the SEI resulting from CA is not as robust as that from SA, which is related to the binding energy of the SEI components. This understanding reveals the importance of the electrolyte acidity on the Ni-rich cathode and the robustness of the SEI on Li anode, which is helpful for rationally designing new electrolyte additives to further improve the cyclic stability of high-energy-density Ni-rich/Li batteries.
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高影响因子
IONICS
·
2018
·Vol. 25
·期 6
·2595-2605
·
IF 2.347
Zhang Min,Ma Xiaoyan,Liu Yi,Ma Jingyu,Chen Fang,Zhang Qi
Polyhedral oligomeric silsesquioxane-poly(methyl methacrylate) 8 (POSS-PMMA 8 )/polyvinylidene fluoride (PVDF) hybrid gel polymer electrolyte (HGPE) membranes have been fabricated by using electrospinning along with the use of commercial polypropylene (PP) microporous membranes as its support; the corresponding HGPEs were obtained after being activated into liquid electrolytes. The goal of the study is to incorporate the high mechanical property of microporous PP membrane and superior electrochemical performance of electrospun gel polymer electrolyte to get the high-performance electrolyte for Li-ion battery. As an effective modifier, it is found that the introduction of POSS-polymer plays a vital role in enhancing many properties of HGPEs, and the influence of POSS-(PMMA 46 ) 8 content on overall properties of HGPEs is investigated. In specific, the HGPEs membrane with 12 wt% POSS-(PMMA 46 ) 8 displays a significant uniform fiber diameter with 720 nm and high electrolyte uptake of 322% due to the high porosity of 58%. Meanwhile, a great improvement in mechanical property is obtained with a tensile strength of 34.5 MPa, which is about 7 times of POSS-(PMMA 46 ) 8 /PVDF membrane without support. The interfacial resistance between the corresponding HGPEs and Li electrodes is significantly reduced and as low as 138 Ω. Furthermore, the LiFePO 4 /HGPEs/Li button cell is assembled and excellent cyclability is shown at 0.1 C and 0.5 C, respectively. The results demonstrate that POSS-(PMMA 46 ) 8 /PVDF HGPEs could be applied as a promising HGPE candidate for high-performance Li-ion batteries.
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高影响因子
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